.icon-help {
    width: 14px;
    height: 14px;
    background-image: url('../icon/help.svg'); /* 相对路径按你项目结构调整 */
    background-size: contain;
    background-repeat: no-repeat;
    background-position: right;
    vertical-align: middle;
    margin-left: 0px;
    pointer-events: none; /* 图标本身不捕获事件，事件由外层 a 处理 */
}